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參數(shù)資料
| 型號： | LUCL9218AAR-D |
| 英文描述： | Low-Cost Line Interface |
| 中文描述： | 低成本線接口 |
| 文件頁數(shù)： | 6/30頁 |
| 文件大?。?/td> | 378K |
| 代理商： | LUCL9218AAR-D |
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6
Agere Systems Inc.
Data Sheet
November 2001
L9218A/G Low-Cost Line Interface
Functional Description
Table 2. Input State Coding
Table 3. Supervision Coding
B0
1
B1
1
State/Definition
Powerup, Forward Battery.
Normal talk and battery feed state. Pin PT is positive with respect to PR.
On-hook transmission is enabled. Low current limit is selected.
Powerup, Forward Battery.
Normal talk and battery feed state. Pin PT is positive with respect to PR.
On-hook transmission is enabled. High current limit is selected.
Disconnect.
The tip and ring amplifiers are turned off, and the SLIC goes to a high-impedance state
(>100 k
). Supervision outputs read on hook. Device will power up in this state.
Low-Power Scan.
Except for off-hook detection, all circuits are shut down to conserve power. Pin PT
is positive with respect to pin PR. On-hook transmission is disabled.
1
0
0
0
0
1
NSTAT
TSD
0 = off-hook or ring trip.
1 = on-hook and no ring trip.
0 = Normal device operation.
1 = Device is in thermal shutdown.
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